POV-Ray : Newsgroups : povray.advanced-users : Paraboloid with thickness : Re: Paraboloid with thickness Server Time
29 Nov 2022 19:47:53 EST (-0500)
  Re: Paraboloid with thickness  
From: BayashiPascal
Date: 28 Jan 2021 23:20:00
Message: <web.60138beb22c070976396ca3e0@news.povray.org>
Cousin Ricky <ric### [at] yahoocom> wrote:
> One thing I noticed about BayashiPascal's code is that the contained_by
> box is much larger than the paraboloid.  All that extra volume slows
> down the rendering of the isosurface, so you’ll want to tighten that up.
>   By using box { <-R, -_thickness / 2, -R>, <R, 5, R> } where R = sqrt
> (5 + _thickness / 2), I was able to reduce the max_gradient to 6.4 and
> cut 1/3 off the render time.

Right. Thanks for improving my lazy solution.

Pascal


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